sometimes they blur and sell wrongly accidentally one. not defending them, but my bf once asked for prices from a shop in simlim, and they quoted him a different price from what they're actually charging 'cos he asked another person from the same shop and he quote different price.
but huh...u cant trust simlim ppl completely la. their products old or new u also wun know. i know this cos i've worked with ppl from those shops b4. dunwanna mention 'cos they're very popular and dunwanna say wrong things. :\ and they gimme discounts one.