My road bike was second hand at £140 (about £800 new), my off road bike £38.00 and my folder £45.00
Cycle gear all came from Aldi when they had a special on and I basically got a wet weather kit and a cold weather kit all for about £70.00.
I bought a new saddle for about £20 and a rear casette on
ebay for £20
I have been cycling for about 3 years now and I think that is about it for my spend on bikes. Got some lights for christmas one year.
The bike got me to Paris this year and was the only one in our group with no mechanical problems.
So I dont think I am not inflicted with this spending urge - or it may be that the wife and kids spend the money first!