What's the difference between costly and overcostly?

Costly

Definition:

(a.) Of great cost; expensive; dear.
(a.) Gorgeous; sumptuous.

Example Sentences:

(1) Simplicity, high capacity, low cost and label stability, combined with relatively high clinical sensitivity make the method suitable for cost effective screening of large numbers of samples.
(2) An effective graft-surveillance protocol needs to be applicable to all patients; practical in terms of time, effort, and cost; reliable; and able to detect, grade, and assess progression of lesions.
(3) In the bars of Antwerp and the cafes of Bruges, the talk is less of Christmas markets and hot chocolate than of the rising cost of financing a national debt which stands at 100% of annual national income.
(4) Issues such as healthcare and the NHS, food banks, energy and the general cost of living were conspicuous by their absence.
(5) In choosing between various scanning techniques the factors to be considered include availability, cost, the type of equipment, the expertise of the medical and technical staff, and the inherent capabilities of the system.
(6) In documents due to be published by the bank, it will signal a need to shed costs from a business that employs 10,000 people as it scrambles to return to profit.
(7) This study examines the costs of screening patients for alcohol problems.
(8) A recent visit by a member of Iraq's government from Baghdad to Basra and back cost about $12,000 (£7,800), the cable claimed.
(9) It ignores the reduction in the wider, non-NHS cost of adult mental illness such as benefit payments and forgone tax, calculated by the LSE report as £28bn a year.
(10) There was a 35% decrease in the number of patients seeking emergency treatment and one study put the savings in economic and social costs at just under £7m a year .
(11) Environment groups Environment groups that have strongly backed low-carbon power have barely wavered in their opposition to nuclear in the last decade, although their arguments now are now much about the cost than the danger it might pose.
(12) From the social economic point of view nosocomial infections represent a very important cost factor, which could be reduced to great deal by activities for prevention of nosocomial infection.
(13) The stepped approach is cost-effective and provides an objective basis for decisions and priority setting.
(14) Failure to develop an adequate resource will be costly in the long run.
(15) The method is implemented with a digital non-causal (zero-phase shift) filter, based on the convolution with a finite impulse response, to make the computation time compatible with the use of low-cost microcomputers.
(16) Cost-effective immunoassays for the detection of amphetamines, benzodiazepines, and methadone in urine have been developed using Syva EMIT reagents and a Cobas Bio centrifugal analyser.
(17) Total costs of building the three missile destroyers in Australia will amount to more than $9bn, approximately three times the cost of buying the ships ready made from Spanish company Navantia, The Australian reported on Friday .
(18) For the non-emergency admissions, the low-load physicians' patients had an average LOS that was 56.2% greater and an average hospital cost that was 58.3% greater than were the LOS and cost of the patients of the high-load physicians.
(19) The aim of this paper is to demonstrate that the problems which arise from simultaneously developing regulatory and competitive approaches to health care cost containment can be solved, if recognized, and that those problems deserve more systematic investigation than they have so far received.
(20) But that gross margin only includes the cost of paying drivers as a cost of revenue, classifying everything else, such as operations, R&D, and sales and marketing, as “operating expenses”.