Altura pro-gel are around 15 quid. I stuck with them through 4 x 600km rides last year - no problems, hardly any numbness/tingling after the 1200.
Oh, and the ladies version is identical, just different colours! (And small = medium etc).
I think the gel inside these sorts of gloves eventually breaks down (although they're still quite wearable), so it's not a free lunch - horses for courses.
These disintegrate in the rain. Mine lasted one 600, admittedly it was the awful Hailsham 600, but they got sent back.
Spesh BG glaves don't work for me, so I cut off the padding and then they were OK.
Lidl ones are sort of OK, but I want to try the Gore classic leather ones, or the Knog Love/Hate ones just because they look so stylish.
What are Rapha ones like? At the top end prices, you're talking £30 for Specialized anyhow.