Do you think it's necessary to pay that much for a case? I see them here on SD for $50 or less sometimes. Are those less quality?
Depends if you are looking for a quiet case. I would try to get a case you really like that looks good to you, is easy to maintain, and has room to expand in the future. The 2 cases I listed have nice clean designs, have roomy insides, and make removing dust very easy. You can actually get the R4 case for cheap today at NCIX, but you need to spend past $100 to get free shipping.
R4 case @NCIX for $69.99 only for 2/13 - today [ncix.com]