Well, you better find a new strategy then. :-p
The thing about cheap tanks is that they usualy have better chances of hitting a an armoured target, so if you buy cheap tanks that can be even half or more the price of a modern IFV, you could just make his a very bad day.
Of course, use your artillery/air units for suppression as you would against inf ATGM units to help you.
Don't just send in your tanks first without a care in the world.
