Depends on several factors:
Obviously, the higher-end the property, the more you should invest in preparation and marketing. For example, we had a million-dollar condo listing overlooking the lake --- THAT required staging to the hilt to highlight the fabulous views and amenities. It received multiple offers and went pending in a week's time.
If you're in an area where you are competing with several distressed (foreclosures, short sales) condos and you're selling as a regular sale, you have a built-in advantage provided you price it right.
Is the condo complex an older community? How many units were upgraded/remodeled? You wouldn't want to over-improve to the extent that you're going to need a higher price to recover some of your expenses.
Bottom line: concentrate on the three "C's" --- clutter, clean, color.
Paint is the least expensive way to refresh your condo.
If you have fairly decent carpet, you could consider getting it professionally cleaned (or if that's impossible,look into replacing it). If you're a smoker or you had pets --- all the more that you should get it replaced since odors linger.
Simplify, simplify , simplify. Pare down your stuff to 50% of what you have. Remove all personal items (photos, religious icons, etc). Pack away or give away as much stuff as you can. LESS IS MORE
If your appliances are truly beat down or broken --- go to Airport Appliances to get a selection of inexpensive replacements.
An experienced realtor can help walk you through the condo and point out things you can do to present your place in the best possible light. OR...you can scout your neighborhood -- when there is an open house, or there is a broker's tour (your realtor can tell you), see what your competition is doing, or get some ideas from staged properties.
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