Years ago, late 1970s to early 1980's, the Mexican Red Knee could be bought for (ten dollars) to (twenty five dollars) with a COMPLETE cage setup. Of course, now a red knee tarantula may sell from (twenty five dollars) to (one hundred dollars) with NO setup. Tarantulas had flooded the market, and the interest was nowhere near what it is today - tarantulas are being purchased at an astounding rate (compared to the '70s and '80s). Why? They are fascinating creatures that are easy to care for and interesting to watch - They DO MAKE Excellent Pets.