Wishbone Seamless Tube Price

[Tatey]

How much does everyone tend to pay for the seamless tube? I've worked out you need 4m of 25mm outside diameter and 2m of 19mm outside diameter. I rang up my local supplier and they quoted me:

£26 for 6m of the 19mm OD seamless with a 3mm wall thickness
£43 for 6m of the 25mm OD seamless with a 3mm wall thickness

Do these prices seem reasonable to people? It would mean that my wishbones would come in at a total of £130 including the threaded tube, wishbone plates, bush tubes and seamless tube, with lots of extra 19mm seamless and 2m of 25mm seamless spare.

Also what wall thickness does the seamless tube need to be? I can't seem to find the number in the book, so I guessed at 2mm and 3mm, but my supplier doesn't stock 2mm.