Seriously, pay attn. buy one used, treat it well and then resell. Cost you maybe $150 and you can use as long as you need really.
Here is where Swaro really shines as there is a very well established secondary market.
Ex, look for and pickup a used 5-10 year old Swaro 20-60x, 65mm in either Angled or Straight, non-HD for $1400 or HD for $1650, OR LESS, and you will be good.
Don't buy from sellers with less than a few hundred posts.