So you play a friend's HD28. Then you decide to buy one yourself.

Of course mail order is a viable option. Just a quick check shows prices differing over £350 for the same thing, here, Germany and USA.

Ok. A second hand guitar may be a risk without playing it but a new one after you have played one? No brainer. The quality control of material and build help, as well as enhanced consumer rights through the distance selling legislation and warranty against defect.