I saw them again at Target for 16.97, but honestly, you are standing a good deal of the time, straight up, over the seat, and with your rear end pushed to the back over the seat. But that is up to you. You could try a bike shop or sports equipment store like Sports Authority also. They arent expensive, so you might want to just give it a try and see.
I did get spinning shoes, with the SPD cleat that clips onto the pedal. I think I get a better workout, because I feel more stable, less wobbly, and I am able to push down, and pull up with me knees with me feet actually attached to the pedals. My legs and rear end are really getting toned. A guy at the gym just commented on that, YAY. The shoes are a little pricey, entry level shoes are around $70-$80 and you have to buy the cleat separate and have it attached, so thats another $30-$40. But I am glad I got them. I am excited to go to class and clip in now : )