OK - I'll buy them from him and add 25% margin - how many do you need?
One
Why a UK supplier?
last few deliveries I've had from the US have all been delayed (for weeks) by UK customs demanding forms and money!
This may be insulting your intelligence, but have you exhausted all the kinds of memory available?
No insult. I'm sure I could shave 5 or 10% here or there, but the new functionality I want to implement will likely occupy an additional 30-40% of memory, so an upgrade will still be required.
Many of my libraries are based around use on a mega, and most log lots of messages to an SD card, these messages are held in progmem. When I reuse these libraries on smaller hardware I start to run out of memory. I've re-written a couple of libraries to use pre-compiler directives to remove many of the messages, but this tends to get messy.
The Teensy 3.2 might be a good option
Thats it! completely forgot I bought one months ago for a project that never took off! Cheers