Nut, I was very near you on Friday; thought I would go and see that huge garden centre; Van Hag, What a rip off place!!! £7.99 for a very etiolated Erysimum 'Apricot Delight' even B&Q wouldn't charge more than £4.99 and a good proper nursery like my local would probably charge £3.99
You should have dropped in artjak. I would have told you not to go to van Hage for the reasons you found.
As well as the GC Dove mentioned there's one at Market Deeping, doesn't look much but has some interesting stuff. Not cheap though
It's a proper nursery.