? about older Crossfire amps

[97SUBURBAN]

I got two Crossfire amps in a trade with a guy in the neighborhood.Dont know much about them (he didnt know much either) One is a CFA 602 and the other is a CFA 30HC. Ive been out of the car audio game for awhile,put it this way the last amplifier I bought new(which im still running) was a Phoenix Gold MS2250, still a bad Mofo but is very old school. I was wondering on the power output the little one (602) says 300w x2 and the bigger one(30HC) says 30w x2. I was wondering if you guys could explain this to me in a language I could understand. To me it looks as if he was running the 602 for highs and the 30HC for lows.The 30HC is about 19in long and is high current so im figuring it is more for subs. Any help please? Also wondering how they stacked up against JL amps,I have a guy trying to trade me the CF's for a 300/4 and a 500/1. Any opinions???

[Exalted512]

theyre solid, dependable amps, but if theres nothing wrong with the JL's, id trade em
-Cody

[97SUBURBAN]

I kinda figured the JL's might be a little better,I think he was talking about me throwing in a lil cash on the deal,but I really didnt want to trade them off I would rather just sell them. Any idea what a good asking price for the CF's would be, the 30HC is perfect and the 602 has some scratches.

[Exalted512]

not a clue, especially used...id search on ebay for the same amps and go from that
-Cody