Our lfs is selling all kinds of kent marine products for $3 and master test kits for $7 among other things. All these products came from a 'mother' store that burned down in a nearby town. The products have the 'smoke' dust on them, my hands were black after handling them. Do you guys think the products are still good? I didn't buy anything 'cause I wanted to ask first. The people there are trying to sell everything so to them they are still good. Thanks!!