1 The cost of a ventless gas fireplace is $500 to $2,500, and while there are additional installation costs, you may pay extra for finish work (such as a mantle, marble surround, etc.).2  Some top-of-the-line gas fireplaces may cost as much as $5,000 to $10,000 or more. 3  A gas log kit might cost $750 to $1,000 installed. Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
Sperm can be affected by lifestyle factors such as smoking, drinking alcohol and taking drugs. There are other lifestyle factors that you may not be aware of, and they're also explained here. The good news is, once you become aware of them, they are fairly easy to avoid. It may be.
Other causes of low sperm count include: 1  Drug use. Anabolic steroids taken to stimulate muscle strength and growth can cause the testicles to shrink and sperm production to decrease. Use of cocaine or marijuana might reduce the number and quality of your sperm as well.  Alcohol use.