If you can be bothered nipping over to Laos when you arrive with a visa exempt stamp, it’s 2000 baht at Vientiane consulate,
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baht must be deposited last 3 months total in your native bank account , passport, a recent photo and proof you are staying in Laos, a rental agreement is needed really, minimum 1 month,sure you can sort that, then it’s 2000 baht cash paid at the window at Thai embassy with a print off of your barcode that you get once you finished application on Thai visa website