BAF is the best and cheapest place in the States
I recommend BAF (of course… LOVE THEM) Texas, US (great shop) California, US (click on retail.. great for innovative jewelry) Maryland, US

hey.. I shop on bodycandy.com, I think it’s a good site, and it takes American Express.. so I think you’re ok there. They have everything from earrings to bellybutton rings to belly chains to personalized rings/belt buckles, etc! So, I think you would definitely find what you want on there. For the prices, you can search the items by price, starting at as low as $2 to as high as $100. Here’s a link to the nose studs:

and here’s a link to the earrings, some of them are kind of unusual but some are cute:

If you get enough points, you can get money discounted from your orders, and shipping costs also. damn.. well I just noticed you wanted cheaper than $3.. well the stuff on this site is not cheaper than that, but I definitely wouldn’t want to buy super cheap stuff, it’s not the best for keeping a healthy piercing.. a girl I knew bought bulk before and it was all complete crap. But anyways, just take a look at the site, maybe you’ll like it. Hope you find what you’re looking for

You could try Bmezine, but they are a lot more expensive then BAF. I’m not sure if they are Canadian based or from America, but I am sure it says somewhere on the site.
Tribalectic.com is a pretty good site also. They are from America.