Definently charge more for attachments on your machine , the going rates for a machine with operator down here on the Gulf Coast varys on machine size , but say a T-190 with a bucket gets $60 per hour and most have a 4 hour min which would include travel time in and out the job , a wheeled 7 series is $50 , T-190 with a hammer it's $100 per hour for braking time , grapple $70 per hour , auger drive $80 per hour , some charge for the attachment as a flat price and by hour on machine and operator , a good operator gets $20 per hour ,a rookie $10