I too had a 55 gallon without a stand. I scored however at a garage sale and got an old behind the couch table, like a coffee table but skinnier and longer. It is perfect for my 55 gallon. of course it could be no whimpy table, it is well made and very sturdy. Maybe not the ideal stand, as there is no cupboards for storage, but considering I priced stands for months, and never came up under $100.00, it works perfect for me. I would suggest looking at some used furniture shops, and go the less traditional route, if you are looking to go cheap anyway. Nothing beats the look of a tank in a nice custom built stand! 
