In From 2014 thru 2020, I sold the blank PCB for $8. In 2020, a kit including the LED display, PCB, and all the parts that were needed to be loaded on the PCB and a jumper to connect the two sold for $45. This included a preprogrammed (by me) ATmega328P and color printed instructions. Some of these were sold on eBay, for example, and there was 10% or so charges from them (don’t remember exactly) plus the PayPal fees, so I probably took in $38ish? <\/p>\n\n\n\n
Today, just the parts I can get from Mouser – not including the LED display, jumper or PCB is almost $30 – $37.10 with shipping. Below is a sample of the price changes:<\/p>\n\n\n\n I’m not trying to make money with these kits, but I have to cover my costs, obviously. I am not ordering up one kit worth of parts at a time either, but now I am spending a couple of hundred dollars to make 8-10 kits. And I “make” them – count out the parts, load chips onto anti-static foam, load the parts in anti-static bags, program the microcontroller, etc. <\/p>\n\n\n\n I am probably looking at $60+ for a kit like the one I shipped in 2020 for $45. There’s an individual on eBay selling my design and building the same kit I described above (it’s open source after all) from the Netherlands for about $61 USD, about $75 shipped to the US. This is for a built PCB and display – not mounted in a case, but still – where does a $60 kit fit in here? <\/p>\n\n\n\nDescription<\/td> Order Qty.<\/td> 2025 Price<\/td> 2025 Ext.<\/td> 2020 Price<\/td> 2020 Ext<\/td> change<\/td><\/tr> Multilayer Ceramic Capacitors MLCC – Leaded 50 VDC .01uF X7R 10 % 2.54 mm<\/td> 10<\/td> $0.24<\/td> $2.36<\/td> $0.09<\/td> $0.90<\/td> 162.22%<\/td><\/tr> Multilayer Ceramic Capacitors MLCC – Leaded 50V 0.1 uF Z5U Long Leads 1″min 20%<\/td> 10<\/td> $0.17<\/td> $1.73<\/td> $0.10<\/td> $1.00<\/td> 73.00%<\/td><\/tr> Carbon Film Resistors – Through Hole 1KOhms 1\/8W 5% Std Carbon<\/td> 2<\/td> $0.10<\/td> $0.20<\/td> $0.02<\/td> $0.04<\/td> 400.00%<\/td><\/tr> Linear Voltage Regulators 5V 1A Positive<\/td> 1<\/td> $0.58<\/td> $0.58<\/td> $0.51<\/td> $0.51<\/td> 13.73%<\/td><\/tr> Crystals<\/td> 1<\/td> $0.36<\/td> $0.36<\/td> $0.40<\/td> $0.40<\/td> -10.00%<\/td><\/tr> Encoders, Decoders, Multiplexers & Demultiplexers Dual Line<\/td> 1<\/td> $0.86<\/td> $0.86<\/td> $0.40<\/td> $0.40<\/td> 115.00%<\/td><\/tr> Counter ICs Hi-Spd CMOS Logic 4- Bit Bnry Rpl Cntr A 595-CD74HCT93E<\/td> 1<\/td> $2.92<\/td> $2.92<\/td> $1.46<\/td> $1.46<\/td> 100.00%<\/td><\/tr> Aluminum Electrolytic Capacitors – Radial Leaded 47uF 25V<\/td> 2<\/td> $0.21<\/td> $0.42<\/td> $0.11<\/td> $0.22<\/td> 92.66%<\/td><\/tr> Carbon Film Resistors – Through Hole 10KOhms 1\/8W 5% Std Carbon<\/td> 1<\/td> $0.10<\/td> $0.10<\/td> $0.02<\/td> $0.02<\/td> 488.24%<\/td><\/tr> Rectifiers 50V 1A Standard<\/td> 1<\/td> $0.17<\/td> $0.17<\/td> $0.07<\/td> $0.07<\/td> 142.86%<\/td><\/tr> Tactile Switches 6.0X5.0MM 160G<\/td> 1<\/td> $0.23<\/td> $0.23<\/td> $0.25<\/td> $0.25<\/td> -8.73%<\/td><\/tr> DC Power Connectors PCB 2.1MM<\/td> 1<\/td> $1.04<\/td> $1.04<\/td> $1.04<\/td> $1.04<\/td> 0.00%<\/td><\/tr> RCA Phono Connectors RCA jack, 3P, 1 x 3, rt, through hole, BE\/GR\/RD<\/td> 1<\/td> $2.92<\/td> $2.92<\/td> $2.54<\/td> $2.54<\/td> 14.96%<\/td><\/tr> IC & Component Sockets 28P DIP SKT 300 CL LADDER<\/td> 1<\/td> $0.72<\/td> $0.72<\/td> $0.44<\/td> $0.44<\/td> 63.64%<\/td><\/tr> IC & Component Sockets 16P DUAL WIPE DIPSKT<\/td> 4<\/td> $0.61<\/td> $2.44<\/td> $0.38<\/td> $1.52<\/td> 60.53%<\/td><\/tr> IC & Component Sockets 14P DUAL WIPE DIPSKT<\/td> 1<\/td> $0.61<\/td> $0.61<\/td> $0.51<\/td> $0.51<\/td> 19.61%<\/td><\/tr> Phase Locked Loops – PLL PLL w\/ VCO<\/td> 3<\/td> $0.88<\/td> $2.64<\/td> $0.52<\/td> $1.56<\/td> 69.23%<\/td><\/tr> 8-bit Microcontrollers – MCU 32KB In-system Flash 20MHz 1.8V-5.5V<\/td> 1<\/td> $2.89<\/td> $2.89<\/td> $2.08<\/td> $2.08<\/td> 38.94%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n