You'll be fine.
One of the official Pro-Lite retailer has been shifting 5 used sets at £299 with used tubs so it doubt this will go for more.
http://www.ebay.co.uk/itm/PRO-LITE-ROSA-CARBON-TUBULAR-50MM-RIMS-WHEELSET-TRACK-FIXED-1-2x1-1-8-used-/190950375930?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2c758781fa
They still sell new ones straigh from the factory for £299+£60 postage: http://www.ebay.co.uk/itm/PRO-LITE-ROSA-CARBON-TUBULAR-50MM-RIMS-WHEELSET-TRACK-FIXED-1-2x1-1-8-15T-16T-/190900465507?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2c728def63 and you can 'best offer' - import taxes should be circa £30.
I have Campag Pista wheels which are already too good for me so won't be bidding.
@Vince started
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You'll be fine.
One of the official Pro-Lite retailer has been shifting 5 used sets at £299 with used tubs so it doubt this will go for more.
http://www.ebay.co.uk/itm/PRO-LITE-ROSA-CARBON-TUBULAR-50MM-RIMS-WHEELSET-TRACK-FIXED-1-2x1-1-8-used-/190950375930?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2c758781fa
They still sell new ones straigh from the factory for £299+£60 postage: http://www.ebay.co.uk/itm/PRO-LITE-ROSA-CARBON-TUBULAR-50MM-RIMS-WHEELSET-TRACK-FIXED-1-2x1-1-8-15T-16T-/190900465507?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item2c728def63 and you can 'best offer' - import taxes should be circa £30.
I have Campag Pista wheels which are already too good for me so won't be bidding.