If you can find some 147 grain HBWCs (hollow base wad cutters for a reasonable price, buy them. I just put a box of them through my model 28 yesterday, and was amazed at how accurate they were out of that gun.
I can't help you with manufacturer prices on specific brands except to say that Cheaper Than Dirt, and Sportsmans Guide seem to have pretty low prices on bulk ammo. The thing is that once you add shipping, you are paying almost what you will pay at the local Walmart or local gun shop. You will have to do a bit of shopping.
Welcome to the forum.
WG840