The Andis clippers probably COULD roach a mane but they're not hugely heavy duty. I don't think they'd be ideal for that. I guess it depends how think the mane is! Shipping for the Andis clippers would be $11.00. They come with a large case and a bunch of accessories, which makes them heavier and bulkier to ship.
In terms of the Oster clippers, shipping would be slightly less because they are just the clippers-- no case, no extras. They are much heavier dutier clippers and those would be the ones I would recommend for mane roaching. Shipping would be $10 for those. I can be somewhat negotiable on the price. I could sell those for $95 including shipping to you.