Originally Posted by Ron Bennett

Firstly, those thresholds (ie. 25 feedback) are variable and not reliable; not set in stone.

To speed up / avoid a hold is to ship with tracking, such as USPS Delivery Confirmation (not the same as insurance or return receipt; don't use those), UPS tracking number, etc that can be checked on-line.

After shipping, copy and paste the tracking number into eBay for that order - if unsure how, see eBay help pages for more details.

And encourage, though don't pester (to avoid risk of negative feedback), the buyer to leave positive feedback - that along with the shipping tracking data, as explained above, will often result in a rapid hold release.