I have gotten fish here a couple times, only one time did I have an issue, a royal gramma with gill flukes and they were very helpful with that issue.
you do have to be there to pick up the item, if you want the guarantee (and you really do want the guarantee), if you work during the week you might want to see if you can have it delivered to your place of work they will be fine in the box as long as you have it in a place where it is room temp.