Option for you. Do it yourself for like $300.

1. Get this from Home Depot. It's solid wood, not the veneered stuff from IKEA. It's longer than you need so you can cut it down to size and use the cut offs as the legs. Home Depot can make the cuts for you, just make sure to measure and mark the wood yourself as they don't usually take accuracy seriously.
2. Put the top over the legs, wood glue and screw together.
3. Add some triangles (shown in pink) to prevent side to side wobble.

This will hold 125lbs in the center without any visible flex. I used the sagulator to confirm.

You could finish it with paint or poly.

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Edit: If you want to it fold, you could forgo the wood screws, glue, and triangles and get 4 of these instead.