Starting Issues?

Van has new Battery, Plugs, Wires, Oil Change, Master Cylinder, Brake Booster and Filter is all new. My van just started to act up it is not wanting to start used to I would let it sit and it would start up but now nothing. It turns over and everything comes on like it will start but it just won’t. I kept trying to get it to and nope, so we had to tow it home. I don’t know what is wrong with it. It gets gas and it has never ran out of gas because I don’t let it go past half of tank, It always has antifreeze in it. I literally take care of the van. So, I don’t know what is going on with it. Mechanic won’t work on it he said it would cost too much and the van isn’t worth his time. I really don’t want a car payment. So please anyone help.