I like to own my favorite anime to support the creators. My solutions are:
1. BUY THE ORIGINAL MANGA when it comes out in English, especially if it's better than the anime. SHIPPUUDEN qualifies here; the anime is very poorly done, but the manga rocks out, totally.
2. BUY YOUR ABSOLUTE FAVORITES... own your top ten or twenty anime, the ones that you'll view and show to other people again and again.
3. AVOID FILLER ARCS unless a reissued box set is a great deal. Bleach has clearly identifiable filler arcs you can avoid if you wish, and it's like 25% of the episodes!
064-109 Bount Arc
128-137 Karakura Town
168-189 New Captain Arc, plus 204-205 princess from New Captain Arc
203-? the current Zanpakutou Unknown Tales.
(Corrections or additions to my lists of filler are always welcome.)
3. BUY USED and SALE copies... from reputable sellers at eBay, for example, or check out the bargain basement at RightStuf; I've bought great anime on sale for as little as $4 a DVD.
Good luck!