Question on authentication companies

[Laxcat]

Hi y'all. I would like to say that everyone here has been very nice and giving with any and all information that I have sought. Thank you. I don't know what I was expecting but I was pleasantly surprised.

Does anyone ever have an item that they do not want to send in the mail to be certified. Maybe not so much for monetary value but because the item is worth more to you than any insurance could pay? I am asking because I was wondering if there is a place that I could physically take the items myself. I understand it would not be a right there, on the spot, slabbing or even a yes or no answer. I'd be willing to leave the items in their care and return to pick them up when the process is finished. Is this a pipe dream or do the TPG's offer this service. Any help would be greatly appreciated.
Thanks as always,
Matt