How would you rank these keywords? [Ecommerce]

As the thread states, how would you rank 1500+ of the similar keywords like the ones below as I need to help a client, I've just never done so many and assume there is a cost effective way of doing this.

Epson SX130 Ink,Epson SX130 Ink Cartridges,Epson Stylus SX130 Ink Cartridges
Epson SX425W Ink,Epson SX425W Ink Cartridges,Epson Stylus SX425W Ink Cartridges

Yes they're not very hard, infact they're quite easy, but my task is I need to rank around 1500+ of these and it's not cost effective to buy a package for $99 for one or two keywords and one URL!

The ones above are the more popular ones so if anyone does any research there isn't alot of traffic off them, although if you rank for 1500 or more similar keywords theres quite a lot of traffic there.

All help would be great! (Also I know this is in the blackhat thread but if anyone knows a 'whitehat' method that would be awesome too.

Was about to open the same thread, I'm curious about this as well.

I did rank pretty good for some ecommerce store and it's products by just building quality links to the domain (homepage).

But there must be a better way to rank for specific products, so I'm curious what this thread will learn us all...