When you were a kid, did you ever have a birthday party no one showed up for? A "Mum" in the UK virtually guaranteed that would happen to her 14 year old son. She planned a party at a go kart venue, and requested guests bring Amazon vouchers, pack a lunch, and reimburse her for transportation costs to  & from the karting park. It's an 80 mile round trip. Total cost per party guest, $82.00. Mumsnet reports, the responses in social media weren't exactly warm.