I mainly use SW for restocking but sometimes i will look on TP. I don't think you should have too much bother with items going really quickly, you should just have enough time to search. Even if u have to refresh the SW a couple of times, you'll probably get a rough idea of the price. As you buy more, you will get used to the prices, although some things do go up or down in price. If you are quite active on there, u will probably keep up to date with everything