I don't know where to get wigs but you can make your own hair falls super easy like ichigo rose shows

If you're still interested,  YlvaMi I take wig commissions?

Infectious Threads has some Cyber accessories (including Cyberlocks):

http://www.infectiousthreads.com/cyber.htm

I'd also check out Gothic Beauty Magazine, they often have a lot of sites for Cyberpunk:

http://www.gothicbeauty.com/#Kemeah