If you could be more specific about what type of keyboards / mice etc. you want, we could try & source these for you? Example, wireless keyboard & mouse sets, optical mice etc. We may be able to source one or all of the products you need. Thanks!
Also, would you be interested in niche PC products, like desktop gadgets etc.?
By the way, my philosophy is - cash is king. We won't hold paying in cash against you! Bank cash deposits are a very fast way to order.