i higly think that he should buy three ivory silk lilac trees instead of the 2 bur oak trees because...
the ivory silk lilac trees only cost 25$ and the cost for the bur oak tree is 35$.
so the lower priced one wouldn't cost you that much on your budget if you have one.besides the price for three or more is acctually less than what the normal cost so it would save you alot of money.
hope this helps!
