Business agreement - Sale agreement

Hi all,

First time poster here.

Small back ground, im in the finance/ accountancy game and also P/t farmer. as part of my professional and college exams we did 2 years of Law.

2 weeks ago i went to look at a tractor. Price was €18,600

Agreed to buy at €18,600 and he would take my tractor €10k as trade in. ie i would pay €8,600. He said he would come last week to look at my tractor first before doing the deal.

So no word from this lad after 3 or 4 calls and text and i advertise my tractor on donedeal. Few people interested and 2 viewers within 48hours.

Friday last week he calls me and says he wants €9,000 with my tractor (i agreed after a return call) and its a deal and would take my tractor as trade not looking at it and to take down my tractor ad and he would also. both adverts were down within 1 or 2 hours.

so roll on yesterday afternoon and he came to deliver the tractor, I had the money here and he kicked on the deal.

He is a company trading in tractors and plant equipment, I would be a farmer in this capacity.

So is be bound by his agreement