[..]handle at least 60mhz [..]50€[..]
I am afraid they don't match, however I have a
Zeroplus LAP-C 16032 logic analyser, it's a 16 channels @ 100 MSa/s LA, the bandwidth is 100Mhz, using 16 channels works up to 10Mhz which is ok for my 1Mhz digital signals (SPI + glue logic, but also a couple of 8 parallel bus devices), paid 100 euro for it, it's not too bad.
I haven't hacked it yet, I don't know if it also works on Linux somehow, I don't know about its USB protocol, I am using its program on a Windows laptop, it works just fine.