Buying anything in bulk is usually always cheaper in the long run.
There are lots of places to get tape! I dont think it really matters where you buy your tape. You can also check the forum to see what others have suggested.
you can look on www.etsy.com
ashley....thank you!!!! these sites are very helpful!!
Another for the list:
I've got a lot of tapes from there. Happy with their gaffers. They're pretty inexpensive there.
Tape is all about learning how to use different kinds. Backed mirror/deco tapes go on totally differently from unbacked mirror/deco tapes—you just have to learn how each kind works. On the other hand, vinyl and gaffer tapes are easy to manipulate.
I got a good deal on hockey tape in bulk on ebay. If you've never used hockey tape before it's like gaffer but with more grip to it and way cheaper. The downside to hockey tape is that after three to four months the tape will start to unravel at the edges and if left in a hot car multiply times the stickiness of the tape will melt and the tape will come off. But over all I love hockey tape and use it on all my hoops.
*I've bought from this seller before, they are trusted and have fast delivery.
also something to keep in mind when buying tape 25ft is enough for 1, 36''-38'' hoop and 30 yards is enough for about 5 hoops.
I found this site http://www.trickconcepts.com/Tape-C85.aspx Their stuff is really cheap from what I have found if you are wanting to make more than one hoop. When I made my first hoops I was impatient and went out and just brought colored duck tape at Hobby Lobby. I spent way more money than I would have if I would of brought some from online. So shop around to make sure you are getting the best deals. Also www.hoopsupples.com is good too and they have more colors and types of tape than the first website but their shipping is more so I guess it just depends on what look you are going for with your hoop! Good luck and let us know what you can find!