Vic Firth 5a’s are $9.99 a pair on US Amazon. Vater 5a’s are $6.95 or $7.95 (depending on the version).Just looked on Amazon for these..... VF 5a's are 8.99 - cheaper than Vater 5a's at 9.99
The "goodwood" versions are 4.69 for 7a's but 8.99 for 5a's ...........
(Thats UK pounds and pence btw)
If they're longer lasting then I'd be happy to try them for the same price, but they don't appear to be the 20% cheaper as claimed