Pedal thread gone SRAM 150/100 chainset - what can be done?
You can try to helicoil the crankset. This is an insert which can be used to repair threading, though you need some special tools to do it. Your bike shop may or may not have this as an option. They may charge you as much as dropping in a new SRAM S100 crankset for this. 

The crankset uses a Powerspline BB (which means if you to keep the BB, you're going to have to use a SRAM crankset and it seems like your only option is the SRAM S100). 

You can replace the bottom bracket (BB) with any conventional threaded type and use correspondingly compatible crank. For Shimano, you'll get a Hollowtech II bottom bracket for most mid range or higher cranks and a square taper or octalink for the lower end. Note there are other companies which you might want to look for cranks as well (e.g. FSA).

Your bike shop will be able to guide you on this depending on what they have in stock and your price range. It's an easy job to replace the crank or put in a new bottom bracket, but you need the right BB tool, a large crescent wrench and a crank puller.