Erm...wood as in driftwood...usually they prefer the soft ones. Hard ones are ok but will take a longer time to finish it hehe. Please do get those that are being sold in the LFS and not those that u pick up.

L240 is black with white spots...see my other thread. Theres a small pix of him there behind a corydoras.

And in case u guys need more materials to read...can go here and see see
http://www.planetcatfish.com/catelog/numbers/1.php

They got C and L numbers where C = Corydoras and L = Loricaridae (Pleco)
There are many that looks similar. Some has smaller spots while others have bigger ones etc.

Oh I tot just now u meant those exotic pleco being mixed with other space. If it is the commons being mixed in then its because the lfs owner is lazy to clean the aquarium glass.

Pricing basically for L240 the last time i saw it was RM120. Quite ok. But do keep in mind that prices change according to availability. They dun get too big. About 30cm only. The big giants are like the Acanthicus Adonis which may reach almost 1 metre.