The link went directly to the the 7/8 TI stamped razor and my comments were for that one. I had another search and took a gander at the Grim branded razors and would also be a little leery of those.
This is the closest match that I could find to the linked 7/8 TI razor from a Canadian retailer
Thiers Issard Singing Straight Razor 6/8", Faux Tortoise Scales | Fendrihan Shaving Store . It is one size smaller and has the less expensive round tip and yet is more than the linked 7/8 TI razor. Yea, the pricing does make you wonder.
Bob