Can I get a re-entry permit if entering Thailand on a Non-O Visa for only 90 days?

So coming on a Non o and wants to leave straight away.

Yes, Single re-entry

i did at the airport i just paid 1200 baht and let them sort it all out

Yes - you can goto main immigration 1,000 baht tm8 copies of passport ID page and current stamp and a passport size photo - this doesnt extend your 90 days it keeps ticking

Yes. Easiest to get it at the airport on your way out, but you should also be able to do it at your local immigration office as well.

Just know that a re-entry permit does not give you any additional time. The stamp in your passport has the date that your permission to stay expires. When you leave and return with a re-entry permit, you will receive that same exact date on your entry stamp, since you are re-entering on that status. You will need to be back before it expires to apply for your extension.