Watch Amazon. Their prices are not always the best, and if you have a Prime Account, don't be fooled into thinking your really getting free shipping. A lot of times they tack the shipping onto their price. Check the prices on other sites before you click the Amazon Buy button.
Try not to buy bagged soil. Most of it is garbage...even those claiming to be organic. If you have to buy, buy from a local nursery. Ask them for a reference or two of gardeners who use their soil. If they won't give you references, leave. There are too many companies and nurseries selling garbage to unsuspecting gardeners. Mush of what is being sold today is full of junk and nutrient dead. I know you need it now, but best thing...start you own compost pile. If you compost correctly, you'll almost have an endless supply of great garden soil.
I just bought 9 bags of Jiffy Organic Seed Starter at Home Depot. The tried to tell me that it had been "put up" for the winter. I think they wanted me to buy that line. I told them their website says they have 345 bags in stock, and I drove 1 hour to get it. It's not my problem if they put it up for the winter. I was pleasantly persistent! They weren't happy, but they got my 9 bags from up in the nosebleed section.
Check Greenhouse Megastore for perlite. I bought 3-25lb bags of vermiculite from them a couple of months ago. You can't get that size bag from a local nursery or big box store, and it was cheaper than some stores charge for a much smaller bag. You have to pay shipping, but it was still cheaper than if I went out and bought the equivalent of smaller bags locally.
