10 years of columns and thousands of tips

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$7 prescription eyeglasses

Energy-saving CFL light bulbs

Rechargeable batteries

Car tires ordered online and delivered to my front door

Consignment-shop clothing

Things I won't buy as a result of column research:

Time-share vacation

Extended warranty

Cash-value life insurance

Identity theft protection

Pet insurance

Home warranty

Pricey HDMI audio/video cable

Stock-picking mutual funds

Gregory Karp

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