Don't know where you get your info re 500,s !!! If they are so hard to sell then let me know where they are and I will buy them . I have just sold my 500D and it hasn't even finished its refurb ... Made a nice profit and looking for another one . Spares are no problem and I have always sold on for a profit
The 500 beats all others when you factor in ease to sell , cheap maintenance and insurance and no depreciation !!!!!