I was perusing through pinterest and saw someone pin this with the price listed on the top corner as $11.50. I absolutely LOVE Paper Source, but sometimes they're a bit unreasonable with their prices - I've seen the exact 2-set polka dot patterned tape at a local Japanese stationary store for $7-8. For me, $7-8 is fairly reasonable for a set of washi tapes of this size & particular pattern (I know that other special patterns tend to cost more - which is reasonable depending on the pattern).
Anyway, seeing this got me thinking about where other people buy their washi tapes. I've seen bloggers with amazing collections of washi tapes. I want to keep building my collection, but it does get expensive! So, I'm wondering. Where do you buy your washi tape? Any shop recommendations?