Add the Pet ID you need to accept at the end after id='.
You will find the Pet ID number when you click on a pet from the owner's profile. It will be the digits at the end of the URL (what is in the address bar).
Even with the Pet ID and URL, you can only accept pets that were sent to you. It is not a trick to allow you to accept any pet from any account you want.
These are the prices of the Rune on SS when I do the level. I may not have paid the amount (if I already had it, traded for it etc.) but like to keep track of what the Temples would have cost if I paid SS prices for all levels.
Level 1: Rune J - 159k
Level 2: Rune Y - 90k
Level 3: Rune T - 160k
Level 4: Rune AE - 90k
Level 5: Rune K - 99k
Level 6: Rune T - 90k
Level 7: Rune J - 140k
Level 8: Rune P - 99k
Level 9: Rune T - 90k
Level 10: Rune P - 93k
Level 11: Rune A - 123k
Level 12: Rune B - 73k, Rune I - 100k
Level 13: Rune A - 121k, Rune E - 97k
Level 14: Rune T - 83k x2
Level 15: Rune E - 100k, Rune R - 55k
Level 16: Rune J - 189k, Rune L - 89k
Level 17: Rune E - 91k, Rune G - 57k
Level 18: Rune C - 98k, Rune F - 98k
Levl 19: Rune A - 93k, Rune H - 210k
Level 20: Rune I - 167k, Rune M - 64k
Level 21: Rune Q - 98k, Rune K - 105k
Level 22: Rune Q - 80k, Rune D - 107k x 2
Level 23: Rune E - 109k, Rune I - 161k x2
Level 24: Rune AE - 130k, Rune R - 100k, Rune C - 99k
Level 25: Rune S - 160k, Rune L - 73k, Rune G - 98k
Level 26: Rune D - 107k, Rune F - 89k, Rune P - 130k
Level 27: Rune D - 108k, Rune A - 129k, Rune J - 208k
Level 28: Rune H - 186k, Rune E - 123k, Rune D - 99k
Congratulations!! You have made your way through the Temple of Transubstantiation!!! You can now change your pet to a colour of its choice next time you visit this Temple