Does my company NEED a website

The answer to this question depends on your business. You, the owner, know it the best, so only you can answer this question successfully.
If your company is organized, all your clientele is local and you're back ordered until next December, you probably don't need a website.
A web site serves many purposes, and is a communication tool – not an advertisement. Your web page will not come and go with the latest issue of the newspaper, local magazine or radio spot.
It will continue to serve your company for years to come, and if done right can increase your sales, and drastically improve your company awareness and reputation.
If you often wish you could communicate effectively with a broader range of clients / customers, publicly post answers to frequently asked questions, attract new customers, break in to new markets and take the market share from your competitors – then you NEED a website.
A web site is where people can get information on how to find you, where you are located, what you have to offer, why your service is unique, and what’s new in your company. It also is easily updated and changed frequently, and is a communication forum through which your customers can communicate back to you with questions, concerns and feedback on their needs.

What is it going to cost?

Having a website involves three basic costs:
Getting the website built (the highest cost) – this is where a web developer / designer will actually build your site from the ground up. A website is nothing more than programming script, html, and css code, images and text woven together to create a final experience. The cost for developing the site can be anywhere from $250 to $2000+, depending on size and functions. For most basic small business sites, the cost will run between $250 and $1000. This cost is a one-time investment for a tool you own and can continue to use for communication and marketing.
Hosting – Once your site is complete it will need to be hosted on a server so the rest of the world can enjoy it. Hosting costs vary. They can run anywhere from $4 to $50 per month, based on the website functionality and the hosting provider. Service varies widely as well. The ideal host will offer several services bundled together for one affordable price. Look for these services:

• The space provided for your site on the server should have ample room for high traffic (bandwidth). When a site doesn’t have enough bandwidth, the web visitor find the site to be slow loading and difficult to access.
• The hosting package should have at least one email address that can be accessed through the web.
• The Hosting package should have a reliable track record of maintaining high dependability. When your server goes down, your web site and associated email is unavailable.

Domain Name – a domain name is the web address where users find your web site (www.yourcompany.com). Domain names are unique and cannot be duplicated. The cost for registering a unique domain name is about $20 per year or more
Additional Costs – can include:
Email services with multiple email accounts. Internet marketing services – researching how best to promote your site and get the maximum visibility, drawing more visitors to your site.
Maintenance services – updating the site continually, making changes, adding pages, delivering web statistic reports, and more.

I already have a web page with another organization. Isn’t that enough?

If you have a web page with your Chamber of Commerce or with a listing service in your industry or parent company (i.e. realtor.com, Teleflora, bbonline, etc.), that is a GREAT thing!
THE BAD NEWS:
It's not a web site. It only offers contact information and a brief description of what your offer. It lumps you into a wide category that generally includes your competitors, and in many cases, it doesn’t offer the interaction with the public that your own website would offer. Finally – you don’t own the site or have any control over it.
THE GOOD NEWS:
Your web site brands you as unique and reveals your identity. The good news is that having that page with the Chamber or other listing service will enhance and empower your new website. It will drive more traffic to your site and put you one step ahead of the marketing game.
THE FACTS:
Think about it. If a visitor is looking for a florist on Teleflora and finds five listings close to home – and one of the listings has a link to its own website – that visitor is going to go one step further and click on that florist’s website. When scanning a list, people always want to know more. Your link gives them that opportunity.