I have just moved company and they have an old bespoke system that does not talk to market places. Having used Linnworks before I suggested it, now the problem i have is they have over 1400 lines and non of it has weights and measures. Without having to add this to all the products is there a work around so Linnworks will spit out the correct postage labels?
Do the items vary a lot in weight? You could just run a script and set them all to an average to begin with