One major difference between ectomycorrhizae and arbuscular mycorrhizae is

One major difference between ectomycorrhizae and arbuscular mycorrhizae is that ectomycorrhizae do not penetrate plant roots; arbuscular mycorrhizae penetrate plant roots.
 This means that there is a difference how the fungus colonizes the host plant's root tissues. arbuscular mycorrhizal fungi (AMF or AM), colonizes the host plant intracellularly, while the ectomycorrhizal fungi extracellularly.

You don’t list any options but the one that frets overspending and the consequences of that.

To sum it up you’ll get in a lot of trouble and even some legal action can be taken