Personally I truly like BVG and yes that Mantle is well priced and is also nice for the grade. You would be lucky to find another one that nice for the grade...I say buy it!!!
But do not over bid wait to the last minute to place a bid even better the last 20 seconds.
I also own a 52 Topps graded PSA 4 (looks more like a 5)....like I said when a nice one pops up at a reasonable price buy it!!!
To give you a idea I paid 12 950$ for a PSA 4 (again it looks like a 5) so a BVG in 3.5 at less than 10 000$ is a good buy....plus it looks pretty well centered as well.
If you live outside the U.S have it shipped to you using FeDex priority worldwide you will get it the very next day and is the MOST safe method for such a card. I would NEVER use UPS or USPS for this card.