Actually, 1000 UR can be converted to 1400 Avios if you you have access to coupon connection - there are lots of folks in CC with AMEX MR willing to exchange 1:1 for UR, and there is currently a 40% AMEX MR transfer bonus to Avios. So basically, 4500 Avios can be had for less than 3250 UR (ignoring the need to transfer in increments of 1000).