|If you're ordering something like ammo or guns you should do a small test before making a big order.|
For example to vet FFLs
Don't send a big purchase to an FFL without first sending a small purchase.
To test ammo.
If you want to try some new ammo and it's cheap, don't order $1000s of dollars of it until you test it in your firearm with a small purchase and then make a big purchase.
Buy 1 box and test before you do multiple boxes. I bought Low Recoil ammo for $20 @ $2 a pop. Tried it and liked it. On the down side I bought a box of ammo for $25 and was going to test it but the price went up to $35 a box.
To check prices and reviews
Before you buy a specific gun, research prices. I found a gun for $50 less by searching the UPC.
Check online reviews of products before buying.