I still rue delaying my first SnapBack a few months ago (when I'd first found SnapNames). I saw my personal email domain in another TLD (.ORG) expiring. Found SN, and actually started the SnapBack order process, then cancelled it midstream because I thought it was too expensive. Changed my mind a few days later, but someone else had claimed the SnapBack by then.
This was all the more frustrating since it happened during the .ORG TLD handover (when everything was frozen). According to SN, PIR.org would hold all expiring .ORG domains for 3-4 months before releasing them, so I was surprised when that domain's SnapBack was suddenly listed as available again. Actually thought the other person might've moved his SB subscription because of the 3-4 month delay. I did put my SB order in then but would've had to wait months to find out for sure, so I called them instead. At first they told me it did mean the original SB was moved, but after checking some database they found out that that original SB did get processed after all, inexplicably. So my new SB was actually for next year if the domain should expire then. :sad: