These are hard to get in a 9 and nearly impossible in a 10. I wouldn’t worry about Cert # but up to you I guess I can understand wanting the consistency of cert numbers/labels but personally doesn’t bother me.
I follow the registry pretty close for Base Set 2 as I actively collect it. I’ve seen a few 9s but a lot of 7s and 8s for Wiggly. Only a single 10 in the past year or so which is ridiculously rare. It’s extremely condition-sensitive and usually marred with print lines or bad centering issues. Another problem is, it came in the starter decks but being on the top it usually has the sticky residue on it so it can’t get a normal high grade.
I found one in Ireland, it’s a little over your budget but a newer cert #: