I've made 2 orders from Merlin. One was a set of C24 wheels. The other was a near full Record Groupset. Both orders made on a Friday night, both times, delivered on the following Wednesday. I'll never order anything major anywhere else (except possibly Wiggle).

The best part was having my bike in the local big Spesh Dealer shop and having the shop manager ask about how much it cost to build and watching the bewildered look on his face when I tell him what I paid / general cost for other items from same place. "Wha...? I can't even order those things as a dealer for that little!" - When I told him you can get full Ultegra Di2 or Dura Ace Mechanical for $1200.

Love it.