Be careful what you spend your money on Koshea. The owner of a weight gaining supplements company was once heard saying something like - "I could put sugar in a tub and call it weight gain powder and they'd still buy it". There's so many scammers and rip-offs in that game Koshea, be careful. There are quality products out there but they're very expensive. If I were you I'd stick to eggs and fish, lots of fish especially tuna. At least then you'll know what you're putting into your body and it won't cost you the earth.
If you're gonna spend that kind of money on supplements you might aswell go on steroids.