i'm sure i paid about that for a couple of rhino m/w turnouts last year, the check ones. really good rugs, been well impressed.
or, 2nd hand on ebay, i guess! you might get a FAL or something good, worth a try.
fwiw i wouldn't get anything other than FAL or Rambo/Rhino if the pony's going to live out in it 24/7...
My Arab has a masta check tech 200gm filling med weight which I got on e-bay brand new for about £35 inc p&p I cant fault it, it kept him warm and dry in all that horrendous rain we had, stayed in place despite him being a colt and turned out with 2 other yearling colts and dries well.