I found mine amongst all the Amiga stuff.
My mother spent an absolute fortune on this, at the time she was a single parent too and I managed to convince her I wanted to "do computer stuff". All these years later I actually work in IT so I reckon even though it was a con from me it actually paid off all these years later.
Oh receipts!
Here's mine, this is from 1991. Really puts the price in perspective. To give you an idea, I have included the price of an All in One HP machine today at a large Australian retailer.