Hi.
Of course the cheapest way would be to get your hands on such low cost timer and hack it to your needs.
That would require some reverse engineering, and probably a lot of time (but also an equal amount of fun).
Or else you could check Alibaba (click !), which is Aliexpress's big brother, and see if you can find a suitable display there or have one of those suppiers create one for you exactly to your wishes.
Of course that would mean an entirely different price tag, and start by checking the minimum order amount to prevent ending up with a container full of displays and a huge price tag.
Some or maybe a lot of those lcd modules have some electrically conductive rubber strip thing that gets super duper annoying when the conductive stuff starts degrading .... and the display begins to fade etc.
duinoMike:
..Would be displaying 2-3 digits only.
Not a lot of choices in lcd.
That's an important piece of information, i assumed you'd need 6 positions.
And there's a huge amount of choices in LCD, but the most popular ones (1602 or 2004) can be found at any shop selling Arduino and the likes.
There's also large font sketches for those, maybe you'd be interested in that.
You can use this forum's search to find some info on that.