The only iron I have found that doesn't have an auto shut-off is a Black & Decker that I bought at the Family Dollar store for $10.00. It was very light weight, got plenty hot & had steam. Didn't have a very big water well though. After 4 years it finally quit working and had to throw it away. When I went to buy another one, they were all out, so I haven't replaced it yet. So, you might check the $ stores in your area and see what you can find.
I am dreaming of an Oliso. I have asked for one for my birthday coming up later in the month.