The glass will be expensive but glass and mirror companies do this every day so that is your best source. ALL door glass must be either tempered or safty glass by federal regulations. Those glass types can not be cut to size so every replacment is by special order. Be sure to mention you need 5 of 1 size when comparison shopping because that makes both material and labor a little cheaper than a single. You should ask about optional processes ( it is invisable) that can be used during fabercation to minimize radiation passing through the glass unless you need the solar heat during cold weather. Simply because you had to ask tells me you have little to no experience with glass replacment,so don't even think of buying these for a diy project. They are extremly heavy and require specialized tools just to move across the room,not to mention transport and install. Now let's talk about fun stuff and saving money. If your budget will not alow doing it and you are crafty,I have a suggestion. Michaels,Hobby Lobby and Ebay offers etching material that can turn plain glass into a high end window/door. And if you were only able to own a mansion by being thrifty,here is a downright frugal way to salvage the glass. The afore mentioned sources as well as Home Depot and Lowes offer a huge catalog of faux stained glass overlay material that is easy to do a good job with. I have salvaged many clouded double panes using both approaches that owners liked better than when the glass was new. I suggest you choose a modest theme due to the large amount of glass you have. A colorful or intrate desighn that looks great as an accent can turn when a large amount is in one room. I like these projects for novices because unlike painting kithen cabinets or a piece of furniture, good results are atainable with no prior experience plus the latter is reversiable.

for certain, (A) it would be a new window installed in the bare framing you can get a better fit, stuff insulation in the gaps and have an easier job trimming the interior. (B) Replacement sash kits are utilizing the existing frame(must be in good condition. So if the frame is not a 100% plumb level and square no matter how good the new sash kits they will not seal properly.The sash kits will be utilizing a compression jamb liner which all the quality window companies stopped using on there better double hung new construction units years ago. Personally I like the idea of sash kits but the existing conditions must be perfect for me to not recommend removal of the old unit. The main advantage to sash kits is that you would not touch the exterior and or interior trim. hope this helps

With double pane windows you cannot just replace one layer of the glass . The entire glass hass to be repalaced. A reputable glass company can do it for you.

With your glass being so large, you've got "double strength" insulated glass units (IGU). When one of the pieces breaks, not only has that glass been destroyed, but the sealed airspace has been destroyed as well. The whole unit usually is replaced in such cases. Is it possible to reseal the glass in the same frames? The answer is possibly "yes" from a technical standpoint, but 'no' from a practical one. The time and cost involved to retrofit such units would be much more expensive than buying new ones. I don't think any glass replacement companies would take the risk of trying to do this. No matter how you look at it your going to have a hefty price tag on replacing this glass. It's well worth the extra couple bucks to get a new IGU with LOE/Arg. The heat you see daily in Florida can be very extreme. By not having the protection of LOE film & some type of inert gas such as Argon or Krypton, you'll spend more money trying to cool the heat that will bypass clear glass. LOE or Low Emissivity coating blocks heat loss through normal clear window glass. It substantially increases thermal window performance while maintaining the appearance of uncoated glass. It reduces summer heat gain, and is also known to reduce the harmful ultraviolet rays, which cause fading of interior finishes. The coating reflects 40% to 70% of the heat that is normally transmitted through glass, while allowing light to pass through. To see if you have a LOE coating on your existing glass just wait until it's dark out and grab a lighter. Hold the lighter up to the glazing unit and observe the reflections of the flame. There will be one reflection for each surface in the glazing assembly. A single pane of glass will have two reflected flames and a simple two layer insulated glass will have four reflections etc... Any surface with a low-e coating should reflect back an image of greater intensity and a slightly different color than the rest. Noting which reflection has shifted in color will tell you which surface is coated. Try the same experiment from the opposite side of the glazing. This should confirm your identification of the low-e surface. These reflection effects are the result of the fact that low-e coatings are somewhat more reflective than glass alone across the spectrum and so will appear to reflect back an image brighter than the other surfaces, and because they selectively reflect greater amounts of longer wavelengths and so they reflect back more red. This second effect is more noticeable in some coatings than others. Hope you understand this and it helps you out in some way. Good Luck!!!