I'd carry them in my car, especially if they are of irreplaceable value to you. Items can get lost in household moves.
You're wise in taking time to research commercial scanning. There are a lot of variables in cost, resolution and where the work is done. Some vendors send them overseas for scanning, which greatly concerns me. I too have slides to scan and am sitting on a fence deciding if I should pay a vendor to do it or buy an Epson V600 or V800 and do it myself with greater peace of mind. Either way it will be a spendy endeavor.
You're wise in taking time to research commercial scanning. There are a lot of variables in cost, resolution and where the work is done. Some vendors send them overseas for scanning, which greatly concerns me. I too have slides to scan and am sitting on a fence deciding if I should pay a vendor to do it or buy an Epson V600 or V800 and do it myself with greater peace of mind. Either way it will be a spendy endeavor.