I paid 36.500 for my 30x52, of course that was 11 years ago. 1020 sq. feet of it is wired, sealed with 1/4" plywood and walls and ceiling insulated with R30. 12 foot wide lean to sheds comprise each side. It has a 30x30 main shop clear span with a 12 x10 on one side for bathroom and storage area and mandoor. Complete with insulated garage doors with electric openers. I had it built before I built my house.
A shop or mancave is important to have especially during our now self quarantine due to the Covid-19 pandemic.
I have it stocked with several compressors, table saw, multiple grinders, porta-a-bandsaw, 5 battery powered drills, blowers, skilsaw, sabre saw and light, 120v 1/2" drill motor, 250 amp stick welding machine, MIG welder, FCAW welder, lots of storage shelving and a work table. Many other small tools and wrenches with 3/8 to 3/4" drive sockets to work any item on my tractors. I also have several air tools including impact drivers, die grinders, right angle drills and air chisels. A heavy impact driver is a must have for removing rusted bolts.