I replaced all four of my shock absorbers quite a few years ago and did it myself. I have a 1998 Tag axle Hobby 750 FLM and nearly died of the shock when I heard what Alco was charging. I found that my axles were colour coded blue and purchased them from CNF Outdoors I ordered:
two 030-qq007426-al-ko shock absorbers Blue total price £139.96 0n 30/08/2016.
Still going strong.
CNF Outdoors, 52 Owthorpe Rd, Cotgrave, Nottinghamshire, NG123PA 08000096499
Hope that all helps in some way bearing in mind that was nearly five years ago.