Cheap ? eek no.
These switches are often extremely overpriced, and alot of times cheaper can be bad switching that can require a pc reboot to get control back >.<
Just 2 pcs tho.. I`m sure I`m seen some that are just leads and u can switch with the keyboard... hmmm
Too bad u don`t want ps2, they`re coming to the £30 area for good 4 pc ones. Be interesting if u could use converters on them (probably not).