Bike lights have gone through some amazing evolution in the last 20 years. Advances in rechargable batteries and LED lights have changed the tune completely.

For red back lights, I have 2 blinkies. One on the helmet, and one on the bike. I also wear a reflective vest. Being seen from behind is really important to me.

For front lights, we bought my girlfriend a $150 LED. It provides what we believe to be enough illumination to see while riding on the MUP. $150 is now just above the entry level front lights. The most expensive I've seen is $800 !

Enjoy the shopping. Nothing wrong checking what's available from REI.