I have been thinking of building (or buying) a garden shed with windows on
one side. The ones that I have seen pics of have a steep front roof with
long windows extending from near the top to near the bottom. It looks ideal
for starting seedlings early, extending plants past the season and various
other things. Does anyone have any experience with such structures?

They seem to run more than a regular storeage shed. Those go for anywhere
from $800 to $1800 in my neck of the woods and that's for pre-assembled. A
solar shed doesn't differ all that much except for the windows and a
different pitched roof and the cheapest I've found is one for about $2200
bucks

I'd rather not build one myself. I don't have the energy I did several years
ago when I would have tackled it quickly. I did get an estimate from a local
lumber company who builds houses too and got a whopping $4200 bucks for a
10'X12'. Any advice out ther would be appreciated.

Maybe a Jake leg carpenter?