Lol, ok, my Onkyo was $700 new, nowadays you can find the new models in the $300 range and up, I like Denon and Yamaha too, but that's also top tier. Middle tier, you are looking at Sony, Panasonic, Kenwood, Pioneer, Sharp, JVC etc and prices range from about $100 to $500. Low tier units are Sherwood, Insignia, anything Chinese sounding (Japanese is usually top tier like Nakamichi) and those will still run $70+. Honestly, for the best deals, hit your local pawnshops for a receiver that looks good and has multiple options like Dolby digital, Blu-ray source, as that'll be newer units. Anything with laser disc or just Dolby is a dead giveaway for an old unit.
Top tier units use RMS, which is a Root Mean Square (that's where positive sine phases cross creating DC voltage basically) setting. This setting is only a % of applicable, positive amplitude, basically it cuts out high amplitude (volume) distortion. Mid range units usually measure in Peak values, which is the positive side of the amplitude sinewave, but it's the whole thing, so after @70% you'll start to get distortion. Low range units use peak-to-peak, which is both negative and positive sine, and since negative sine is inaudible, its useless.
This means a cheap receiver saying it puts out 100w per channel is the same as a decent receiver at 50w per channel or a good receiver at @35w per channel. It's all a marketing ploy by cheaper companies because big numbers sound better, so don't be misled. My 100w per channel Onkyo is the same as a Pioneer 150w, same as a Fisher 300w, so buying a 100w Fisher because that's all your speakers rate, will get you crappy sound until you turn the dial up to 3-5, when you turn the dial up past 7 it distorts like crazy, whereas my Onkyo sounds fantastic at any volume.