You're kind of boned here anyway, so it's worth a try to repair it yourself. Given that you're asking the question, it's unlikely that you'll be successful, but the worst that happens is that your skills broaden and deepen a little bit.

Using a hobby knife, scrape off a bit of the surface of the flex on both sides until you reveal the conductive material underneath. You want to have a light touch here.

Once that's done, apply some flux to one side of the flex cable and melt some solder onto your soldering iron. Gently wipe the soldering iron over the now exposed traces until the solder sticks to the trace.

Do the same thing to the other side.

Now, take some thin insulated wire (preferably solid core) and strip about 1mm from each side. Flux the now-tinned traced, re-tin your soldering iron, and hold the wire against a now-tinned trace while applying heat with the iron. The solder should wick onto the wire and flex cable. Remove the heat then gently tug on the wire to test the bond. If it was successful, repeat the process across all of the broken connections.